Recently, Tao Guangyuan mentioned in his article "Nuclear sewage from Fukushima Nuclear Power Station in Japan can be solidified and stacked safely with concrete" that nuclear sewage from Fukushima Nuclear Power Station in Japan can be solidified in concrete with cement, so as to avoid polluting the sea with nuclear sewage, and the cost is not high. However, the Japanese government said that the nuclear sewage in the concrete would evaporate, resulting in the evaporation of radioactive tritium, which is harmful to human health. Therefore, he insisted on discharging nuclear sewage into the sea. & nbsp; & nbsp;
Tritium is an isotope of hydrogen that is bound in the water molecules of nuclear waste water. In the process of concrete solidification, if the nuclear sewage in the concrete evaporates and emits into the atmosphere, tritium will also emit into the air with the evaporated water vapor. & nbsp; & nbsp;
This problem is not difficult to solve. The specific solution is that after the concrete is made, it is placed in a closed workshop for curing, the workshop is not ventilated with the outside world, and the water vapor emitted in the curing process will condense out in the workshop. At the same time, a dehumidifier is installed in the plant. After the concrete curing process is completed, the dehumidifier is started to dry the air in the plant. The moisture in the air in the plant is solidified, and the dry air in the plant dries the concrete. In this way, the water vapor containing tritium generated in the concrete curing process can be collected and will not be emitted into the atmosphere. After the concrete is cured and dried, the water molecules bound in the concrete will hardly evaporate, and then they will be removed from the closed plant and stacked in the nuclear contaminated no-man's land near the Fukushima nuclear power plant, so that the radioactivity of the concrete will naturally decay.
This problem is not technically difficult to solve, but it is difficult for the Japanese to solve the problem of nuclear sewage at home, so as to avoid discharging nuclear sewage into the sea to harm the health of marine life and people all over the world. To put it bluntly, this question is essentially the question that Japanese people used to ask 80 years ago, which people are familiar with through movies: Is the conscience of a person very bad?
At present, the downward trend of cement demand is prominent, energy prices remain high, costs remain high for a long time, and profit compression has become the norm. Improving energy efficiency and reducing cost pressure have become the key breakthrough points for cement enterprises to enhance their comprehensive strength and market competitiveness. On July 6-7,
2023, China Cement Network will hold the " 2023 China Cement Energy Conservation and New Energy Development Conference" in Chongqing, starting from energy-saving transformation, photovoltaic, energy storage and other technology applications, green power, alternative fuels to replace tradi tional energy transformation, and so on. Explore new ways of energy saving and consumption reduction in cement industry.
After the meeting, we will visit the energy-saving demonstration line of "Grade 5 to Grade 6" of Dongfang Hope Chongqing Cement Preheater.
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